Metal sash or frame joint.



H. L. SMITH, METAL SASH 0R FRAME 10H. APPLICATION FILED SEPT-H. 19",

1,301,981, Patented A r.29,1919.

' 1 INVENTOR 0' W muns UNITED STATES PATENT oFFIoE.

HERBERT L. SMITH, 0F WESTERLY, RHODE ISLAND, ASSIGNOR T0 UNIVERSAL ELECTRIC WELDING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

METAL SASH on FRAME JOINT.

Specification of Letters Patent.

Patented Apr. 29, 1919.

Application filed Septenibenll, 1914. Serial No. 861,163.

To all whom it may concern:

Be it known that I, HERBERT L. SMITH, a citizen of the United States, and a resident of lVesterly, in the county of Washington and State of Rhode Island, have invented certain new and useful Improvements in Metal Sash or Frame Joints, of which the following is a specification.

My present invention relates to metallic sash or frame 'COnStIllCtiOn for windows,

7 partitions and other uses towhich the same may be applicable, the invention particularly relating to the form or character of joint for locking the intersecting members to each other.

The object of the invention is to provide a simple and cheap construction of sash or frame in which the members are rigidly lockedtogether at their intersecting or crossing points.

The invention consists in the novel metal sash or frame joint hereinafter more particularly described and then specified in the claim.

In the accompanying drawings Figure 1 is a plan View of two intersecting members secured together in accordance with this invention.

Fig. 2 is a side elevation tion through the before welding.

, Fig. 3 is a similar view after the welding and partial secparts showing the joint of the joint has been completed.

Figs. 4, 5 and 6 are plan, side'e'levation and cross-section respectively through one of the members of the frame or sash at the place at which the joint is to be made.

Figs. 7 and 8 are plan and side elevation respectively of that part of the companion member at which the member'shown in Figs. 4, 5 and 6 crosses it.

In the drawings but two intersecting members and one joint are shown, it being understood that any number of members and any number of joints may be employed in the completed structure which may be a window sash, frame, partition or any other structure to which the joint is applicable.

1 indicates one of the members ofsuch a structure as for instance the horizontal member while 2 indicates the companion or vertical member arranged to intersect the member 1 at any desired point. For the members l and 2 T-shaped metal is preferably employed as this is a stock shape and therefore cheaper than specially rolled stock and also lends itself very readily to use as a window sash or frame as the angles between the web and the flanges form pockets for the reception of the edges of a pane of glass or other panel.

At the point where it is desired to have the members intersect and a joint formed the flanges of one of the members, as for instance the member 1, are cut away as shown at 3 for'a distance longitudinally at least equal to the transverse width across the flanges of the companion member 2 whereby the u per edge 4 of the web is exposed (see Fig. A downwardly extending slot 5 is formed in the web midway of the Width of the cut-away portion of the flanges 3 and of a depth about half way through the web.

The flanges of the member 2 at the place of desired intersection with the member 1 are provided with inwardly disposed projections preferably in the form of short ribs or ridges 6, formed in the material of the flanges and one located at each side of the web and in line with each other so that when the member 2 is placed to intersect the member 1 the projections 6 engage the exposed edge 4 of the web of the member 1 as shown clearly in Fig. 2, the web of the member 2 being slotted as at 7 in line with the projections 6 to allow the members to intermesh with each other in a well known and obvious manner.

The members are assembled in the manner described and as shown in Fig. 2 between the electrodes of any suitable type of electric welding machine and the electric current in passing from one electrode to the other heats the work and causes the points of restricted contact formed by the points 6 and the web edge 4 to become plastic and on the application of pressure, preferably applied through the electrodes, the parts hecome welded at said points. The electric welding art and the manner of its use being now so well known and generally used in all the arts further detailed description of this part of the process of constructing a joint in accordance with this invention is deemed unnecessary.

hen the projections 6 soften due to the heating current and are pressed down to complete the welded union the member 2 then merges into the same plane with the member 1 and the two members are effectively and solidly locked together directly by their own material Without distorting them or employing separate buttons, clamps or parts. a

It Will be understood that the manner of constructing and the details as to the formation of the parts asabove described is merely the preferable one and that the sash or frame joint as hereinafter claimed might be attained by varying or modifying such details Without departing from the spirit of this in vention.

What I claim as my invention is A metal sash or frame comprising T- shaped intersecting members, the flanges of one member being removed at the intersection to expose the Web and form a repository for the flanges of the other member and projections on the second-named member intersecting the webs of the first-namedmember and Welded thereto.

Signed at Westerly, in the county of Washington and State of Rhode Island, this 9th day of September, A. D. 1914.

HERBERT L. SMITH.

Witnesses:

HARRY B. AGARD, 'NORMAN C. STAN'row. 

